The EPA’s order aims to undo decades of industrial pollution to Seattle’s only river.

Kids who were born the year Seattle’s Lower Duwamish Waterway was designated a Superfund site are now approaching high school. If everything goes according to plan, the federally ordered river cleanup will be finished by the time they are well into their 30s.

So it’s hard to describe anything in this sluggish process as â€śmomentous,â€ť but Tuesday certainly fit that bill, with the release of the Environmental Protection Agency’s final cleanup order for Seattle’s only river.